If Ney-Fi is crashing upon opening Pro Tools and Raven, there could be a permissions issue.
Navigate to the Neyrinck folder in Program Files X86 and right click Ney-Fi and select "Properties"
Select each individual users and check the box for "Full Control" to give each user top level permission for Ney-Fi. Now relaunch NeyFi and Raven.
If it still doesn't connect, be sure your HUI peripherals are setup in Pro Tools before opening Ney-Fi.